From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Direct bypass system and an order for thermostatic units from the Sylphon Company in America.
| Identifier | ExFiles\Box 181\M11\ img228 | |
| Date | 9th September 1919 | |
| To OY. from E.{Mr Elliott - Chief Engineer} -2- Mr. Royce will send later an explanation of why the direct byepass system as shewn has been adopted on our chassis in preference to louvres and other systems of regulation. The particular pieces you are expected to send from America are the bellows tube exhausted and compressed, and filled with a suitable liquid having a boiling temperature of 75°C. at atmospheric pressure and sealed, and having end plates of the type shewn on Lec.1142, together with the thin hexagon nut shewn for securing the bellows tube unit to the spider. Would you kindly send at your earliest convenience, blue prints of Lec.1142 to West WitteringHenry Royce's home town and Mr. Day in Derby. E.{Mr Elliott - Chief Engineer} Drgs sent to OX & an order for 500 to Sylphon Company - Parts supplied by America - Thermostat Units completely assembled & fitted with end plates as shewn on LeC 1143 & the thin hexagon fixing nut for same. | ||